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Message-Id: <1385783502-22462-1-git-send-email-chris.ruehl@gtsys.com.hk> Date: Sat, 30 Nov 2013 11:51:42 +0800 From: Chris Ruehl <chris.ruehl@...ys.com.hk> To: alexander.shishkin@...ux.intel.com, gregkh@...uxfoundation.org Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, Chris Ruehl <chris.ruehl@...ys.com.hk> Subject: [PATCH 1/3 v3] usb: chipidea: Reallocate regmap only if lpm is detected usb: chipidea: Reallocate regmap only if lpm is detected The regmap only needs to reallocate if the hw_read on the CAP register shows lpm is used. Therefore the if() statement check the change. Signed-off-by: Chris Ruehl <chris.ruehl@...ys.com.hk> Acked-by: Peter Chen <peter.chen@...escale.com> --- drivers/usb/chipidea/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 5d8981c..5075407 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -208,7 +208,8 @@ static int hw_device_init(struct ci_hdrc *ci, void __iomem *base) reg = hw_read(ci, CAP_HCCPARAMS, HCCPARAMS_LEN) >> __ffs(HCCPARAMS_LEN); ci->hw_bank.lpm = reg; - hw_alloc_regmap(ci, !!reg); + if (reg) + hw_alloc_regmap(ci, !!reg); ci->hw_bank.size = ci->hw_bank.op - ci->hw_bank.abs; ci->hw_bank.size += OP_LAST; ci->hw_bank.size /= sizeof(u32); -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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